Unitary cavity spin squeezing by quantum erasure
Author(s)
Leroux, Ian Daniel; Schleier-Smith, Monika Helene; Zhang, Hao; Vuletic, Vladan
DownloadLeroux-2012-In situ measurements of the optical absorption.pdf (572.0Kb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
Deterministic light-induced spin squeezing in an atomic gas is limited by photon shot noise or, equivalently, by atomic state information escaping with the light field mediating the effective atom-atom interaction. We show theoretically that the performance of cavity spin squeezing [ M. H. Schleier-Smith, I. D. Leroux and V. Vuletić Phys. Rev. A 81 021804 (2010)] can be substantially improved by erasing the light-atom entanglement, and propose several methods for doing so. Accounting for light scattering into free space, quantum erasure improves the scaling of cavity squeezing from S[superscript −1/2] to S[superscript −2/3], where S is the total atomic spin.
Date issued
2012-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold AtomsJournal
Physical Review A
Publisher
American Physical Society (APS)
Citation
Leroux, Ian et al. “Unitary Cavity Spin Squeezing by Quantum Erasure.” Physical Review A 85.1 (2012): n. pag. Web. 2 Mar. 2012. © 2011 American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622